What is SEC EDGAR?
TL;DR
EDGAR is the U.S. Securities and Exchange Commission's public filing database — the single source of truth for every 10-K, 10-Q, 13F, Form 4, 8-K, S-1, and ~200 other form types filed by public companies, mutual funds, and registered investment advisers since 1993. It is free, public, and machine-readable — a remarkable piece of regulatory infrastructure. Every fact on HoldLens traces back to an EDGAR accession number. Learning to read EDGAR directly is the highest-leverage skill in public-markets research.
EDGAR stands for Electronic Data Gathering, Analysis, and Retrieval. It is the SEC's public filing system, mandatory for substantially all corporate filings since May 1996, and the canonical source for every disclosure HoldLens analyzes.
A 60-second tour of EDGAR
Open sec.gov/cgi-bin/browse-edgar and type any company name. EDGAR returns the filer's page, showing every filing in reverse chronological order. Click any filing to see the underlying documents — typically an HTML version of the form, plus XML and JSON twins. Every page has a permanent URL keyed by accession number, the 18-digit citation-grade identifier you'll see throughout HoldLens.
The three EDGAR surfaces worth knowing
- Filer page —
/cgi-bin/browse-edgar?action=getcompany&CIK=X. Every filing the entity has ever submitted, filterable by form type. - Full-text search —
efts.sec.gov. Search across filing bodies (not just metadata). Underused: this is how you find every 10-K that mentions "customer concentration" or every 8-K with "CFO transition". - Real-time feed —
/Archives/edgar/usgaap.rssand form-type-specific feeds. Every new filing appears within ~30 seconds of SEC ingest.
Where EDGAR falls short
EDGAR is a delivery layer, not an analytics layer. It does not:
- Aggregate positions across quarters (every 13F is a snapshot in isolation)
- Compare filings across filers (no "show me every fund that owns AAPL")
- Score signal strength (every disclosure has equal visual weight)
- Surface time-series (changes are not pre-computed; you diff manually)
- Filter the noise (every restated, amended, and withdrawn filing remains visible)
Tools like HoldLens and SecFilingDex exist because EDGAR's raw surface is unfit for time-series, cross-filer, or signal-graded research. EDGAR is the data; the value is in how you arrange it.
How HoldLens uses EDGAR
Every position, every transaction, every score on HoldLens traces back to an EDGAR accession number. We pull the raw XML or JSON twin for each filing as it's ingested, parse the structured fields (filer, holdings, transaction details), and arrange them in the dimensions retail readers actually want: by quarter, by manager, by ticker, by conviction direction. The source URL is one click away on every result page; you can always verify what we've computed against the underlying SEC document.
Our view
EDGAR is one of the great unsung successes of federal regulatory infrastructure. It launched in 1984 as a pilot, became mandatory for all filers in May 1996, and has operated essentially continuously ever since with negligible downtime. Every public- markets researcher in America uses it. Every quant fund consumes it. Every retail investor with the patience to learn it gets access to the exact same primary-source data that hedge funds pay six-figure data licenses to acquire pre-parsed.
The disclosure ethos of the U.S. capital markets — full, fair, prompt — is implemented primarily through EDGAR. When you read a 10-K on sec.gov, you are exercising the specific civic infrastructure that distinguishes U.S. markets from most of the world. The data is free; the work is reading it.
Pure-reference encyclopedic entries for every SEC form type on our sister site: secfilingdex.com/learn — catalog + regulatory citations for 10-K, 10-Q, 8-K, 13F, Form 4, S-1, 11-K, 13H, NT 10-K, F-1, Form 144, DEF 14A, and more.
Foundational reading on securities analysis
EDGAR is where the documents live; these books are how to read what's inside them. Graham, Lynch, Munger — the foundations.
Bookshop.org affiliate links — HoldLens earns a 10% commission if you buy, at no extra cost to you. Bookshop.org is the indie-bookseller consortium that supports local bookstores. These are the books we actually recommend. Always do your own research.
Not investment advice. See methodology for how we parse and score every EDGAR filing.
Cite this page
Researchers, journalists, and Wikipedia editors — citation formats load with the page. HoldLens content is freely available for reference; please cite.
See EDGAR filings live on HoldLens
Live ConvictionScore — every EDGAR-sourced 13F filing from 30 tracked managers, scored on the −100..+100 scale. Manager rankings, biggest bets, new positions. Sister property cataloging every filing variant: SecFilingDex.